Pick Mastra if
typeScript teams who will run Node and already have provider keys.
Read the Mastra pageMastra vs Pydantic AI
Our take
Pick Mastra if typeScript teams who will run Node and already have provider keys. Pick Pydantic AI if python teams who already trust Pydantic and will add Logfire when they want a trace. Skip Pydantic AI if teams that want a hosted AgentOS UI without writing the agent (Agno).
Best for
Mastra Ship an agent in Node/Next
Pydantic AI Write the agent in Python
Free plan
Mastra $0 · you bring model keys
Pydantic AI $0 · 3 projects. 30-day retention. 1 seat + 2 read-only guests. No card
Lowest paid
Mastra Persistent server (24/7) $100
Pydantic AI Team $49/mo
Next step up
Mastra
Pydantic AI Growth $249/mo
Coding agent
Mastra Agents + tools
Pydantic AI Typed agents
Runs where
Mastra Hosted
Pydantic AI Hosted
Watch out
Mastra Framework $0 is not tokens
Pydantic AI The $0 library is not a $0 model bill
Last checked
Mastra 2026-10-22 · mastra.ai/pricing
Pydantic AI 2026-10-22 · pydantic.dev/pricing
Which one, then?
Pick Pydantic AI if
python teams who already trust Pydantic and will add Logfire when they want a trace.
Read the Pydantic AI page